Question about 2002 Lincoln LS

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Why does my car keep overheating. I changred the thermostat and that wasn't the problem. The car isn't leaking. So can you tell me what the problem is?

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Since you say you changed the thermostat, and that wasn't it then possibly the cooling fan is not functioning properly. Or bad water pump,inaccurate temperature gauge, radiator core blocked or restricted. These are just the most common reasons. Good Luck and I hope this helps a little

Posted on Aug 19, 2010

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Make sure your fans are working properly and that your radiator is free of debris(leaves,trash,mud). Also make sure your radiator fluid is clean and doesnt have buildup in it. I recently had a vehicle with the radiator plugged up on the inside(hard to find) if all this is in proper working order then i would have the engine looked at.

Posted on Aug 19, 2010

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IF OVERHEATING SETTING STILL COULD BE COOLANT FAN NOT TURNING ON IT COULD COOLANT TEMPERATURE SENSOR BAD OR COOLANT FAN MOTOR BAD.BUT CHECK COOLANT FAN FUSE / RELAY AND HOT WIRE COOLANT FAN TO SEE IF IT WORKS IF NOT REPLACE FAN MOTOR.IF FAN MOTOR GOOD YOU HAVE SHORT IN WIRING.IF ALL IS GOOD CHECK ENGINE OIL IF LOOKS LIKE MILK SHAKE YOU HAVE BLOWN HEAD GASKET.

Posted on Aug 19, 2010

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1 Answer

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Keep in mind what I am going to say is via long distance. I would need to check it myself to make any solid judgements.
The leak-down test would show a leaking head gasket IF the gasket is leaking all the time. But it is possible the gasket is only leaking when the engine is hot. A leaking head gasket is the most common way you get extra pressure (bubbles) in the cooling system. The head gasket can leak when the engine is hot and you would not always see oil in the coolant or coolant in the oil as you would if it leaked with the engine cold.
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